package com.syp.lease.web.app.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.syp.lease.common.constant.RedisConstant;
import com.syp.lease.common.exception.LeaseException;
import com.syp.lease.common.result.ResultCodeEnum;
import com.syp.lease.common.utils.JwtUtil;
import com.syp.lease.common.utils.VerifyCodeUtil;
import com.syp.lease.model.entity.UserInfo;
import com.syp.lease.model.enums.BaseStatus;
import com.syp.lease.web.app.service.LoginService;
import com.syp.lease.web.app.service.SmsService;
import com.syp.lease.web.app.service.UserInfoService;
import com.syp.lease.web.app.vo.user.LoginVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.HashMap;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {
    @Autowired
    private SmsService smsService;
    @Autowired
    private StringRedisTemplate redisTemplate;

    @Autowired
    private UserInfoService userInfoService;

    /**
     * @param phone
     */
    @Override
    public void getSMSCode(String phone) {
        //检查手机号是否为空
        if (!StringUtils.hasText(phone)) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }
        //检查redis中是否已经存在该手机号的key
        String key = RedisConstant.APP_LOGIN_PREFIX + phone;
        Boolean hasKey = redisTemplate.hasKey(key);
        if (hasKey) {
            //若存在，则检查其存在的时间
            Long expire = redisTemplate.getExpire(key, TimeUnit.SECONDS);
            if (RedisConstant.APP_LOGIN_CODE_TTL_SEC - expire < RedisConstant.APP_LOGIN_CODE_RESEND_TIME_SEC) {
                //若存在时间不足一分钟，响应发送过于频繁
                throw new LeaseException(ResultCodeEnum.APP_SEND_SMS_TOO_OFTEN);
            }
        }
        //若不存在，生成验证码,并存入redis
        String code = VerifyCodeUtil.getVerifyCode(6);
        smsService.sendCode(phone, code);
        redisTemplate.opsForValue().set(key, code, RedisConstant.APP_LOGIN_CODE_TTL_SEC, TimeUnit.SECONDS);
    }

    @Override
    public String login(LoginVo loginVo) {
        //判断手机号和验证码是否为空
        if (!StringUtils.hasText(loginVo.getPhone())) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }
        if (!StringUtils.hasText(loginVo.getCode())) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EMPTY);
        }
        //校验验证码
        String key = RedisConstant.APP_LOGIN_PREFIX + loginVo.getPhone();
        String code = redisTemplate.opsForValue().get(key);
        if (code == null) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EXPIRED);
        }
        if (!code.equals(loginVo.getCode())) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_ERROR);
        }
        //判断用户是否存在，不存在就注册
        LambdaQueryWrapper<UserInfo> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(UserInfo::getPhone, loginVo.getPhone());
        UserInfo userInfo = userInfoService.getOne(wrapper);
        if (userInfo == null) {
            userInfo = new UserInfo();
            userInfo.setPhone(loginVo.getPhone());
            userInfo.setStatus(BaseStatus.ENABLE);
            userInfo.setNickname("用户-" + loginVo.getPhone().substring(7, 11));
            userInfoService.save(userInfo);
        }
        //判断用户是否被禁用
        if (userInfo.getStatus().equals(BaseStatus.DISABLE)) {
            throw new LeaseException(ResultCodeEnum.APP_ACCOUNT_DISABLED_ERROR);
        }
        //创建并返回token
        HashMap<String, Object> map = new HashMap<>();
        map.put("userId", userInfo.getId());
        map.put("userName", userInfo.getPhone());
        return JwtUtil.createToken(JwtUtil.APP_SECRET_KEY, 60 * 60 * 1000L, map);
    }
}
